Masquerade parties and telling ghost stories around a bonfire can no longer meet the needs of young people looking for excitement on Halloween night. Five friends in a small town in the United States: Sharon (Alexa Vega), Brad (Raleigh McClenton), Laurie (Serge Thompson), Jim (Adam Hendshort) and Ethan (Charan Prabakar) dress up as their ideal images, ready for an overnight expedition to the local haunted Jarvis mine. Legend has it that a man named William Jarvis (Joseph Barzel) grew up in this mountain forest a hundred years ago. One day, he stumbled upon a gold mine buried here and reached an agreement with a company in San Francisco to exchange the deposits for cash. But something unknown happened. William and his family, including his two daughters, were all buried here alive. Their angry souls have been lingering here for many years. The appalling story did not stop the exuberant curiosity of the young people, who crawled deep into the mine with a mini-camera. There are not only bats, but also cloth dolls buried for many years, and victims who still seem to be alive.